Safe door



FIG. 1 is a perspective view of a safe door showing a new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a front view thereof.

The broken lines illustrate environmental structure which forms no partof the claimed design.

All sides not shown form no part of the claimed design.

The ornamental design for the safe door, as shown and described.